Database Error Messages

For the IS or IS NOT logical operator, the keywords NULL, TRUE, or FALSE were not found, nor were other predicates like JSON, NAN, or EMPTY. For example, the following statement generates this message: SELECT * FROM EMP WHERE DEPTNO IS NOT;

Use a predicate after an IS or IS NOT logical operator.

Either of the following: In a CREATE TABLE or ALTER TABLE statement, NOT was entered to specify that no null values are allowed in that column, but the keyword NULL was omitted. In the IS [NOT] NULL logical operator, the keyword NULL was not found. For example, the following statement generates this message:

SELECT * FROM EMP WHERE DEPTNO IS NOT;

The keyword NULL must follow the keywords IS NOT.

Correct the syntax.

Either of the following: In a CREATE TABLE or ALTER TABLE statement, NOT was entered to specify that no null values are allowed in that column, but the keyword NULL was omitted. In the IS [NOT] NULL logical operator, the keyword NULL was not found. For example, the following statement generates this message:

SELECT * FROM EMP WHERE DEPTNO IS NOT;

The keyword NULL must follow the keywords IS NOT.

Correct the syntax.